EP0653599A1 - Kombinierte Metalproduktionsanlageeinheit mit einer Gastrennungeinheit von Luft - Google Patents

Kombinierte Metalproduktionsanlageeinheit mit einer Gastrennungeinheit von Luft Download PDF

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Publication number
EP0653599A1
EP0653599A1 EP94402427A EP94402427A EP0653599A1 EP 0653599 A1 EP0653599 A1 EP 0653599A1 EP 94402427 A EP94402427 A EP 94402427A EP 94402427 A EP94402427 A EP 94402427A EP 0653599 A1 EP0653599 A1 EP 0653599A1
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EP
European Patent Office
Prior art keywords
installation according
unit
iii
metal
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP94402427A
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English (en)
French (fr)
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EP0653599B1 (de
Inventor
Alain Guillard
Marc Buffenoir
Daniel Deloche
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP0653599A1 publication Critical patent/EP0653599A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D46/00—Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04018—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of main feed air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
    • F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04109—Arrangements of compressors and /or their drivers
    • F25J3/04115—Arrangements of compressors and /or their drivers characterised by the type of prime driver, e.g. hot gas expander
    • F25J3/04121—Steam turbine as the prime mechanical driver
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
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    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04157—Afterstage cooling and so-called "pre-cooling" of the feed air upstream the air purification unit and main heat exchange line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
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    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04163—Hot end purification of the feed air
    • F25J3/04169—Hot end purification of the feed air by adsorption of the impurities
    • F25J3/04181—Regenerating the adsorbents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
    • F25J3/04296—Claude expansion, i.e. expanded into the main or high pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04406—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
    • F25J3/04412—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04527—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general
    • F25J3/04551—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the metal production
    • F25J3/04557—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the metal production for pig iron or steel making, e.g. blast furnace, Corex
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04563—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04593—The air gas consuming unit is also fed by an air stream
    • F25J3/046—Completely integrated air feed compression, i.e. common MAC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04612—Heat exchange integration with process streams, e.g. from the air gas consuming unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04951—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network
    • F25J3/04957—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network and inter-connecting equipments upstream of the fractionation unit (s), i.e. at the "front-end"
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
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    • F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
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    • F25J2205/34—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes as evaporative cooling tower to produce chilled water, e.g. evaporative water chiller [EWC]
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    • F25J2205/66—Regenerating the adsorption vessel, e.g. kind of reactivation gas
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    • F25J2230/40—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/70—Steam turbine, e.g. used in a Rankine cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
    • F25J2270/906—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by heat driven absorption chillers

Definitions

  • the present invention relates to a combined installation of at least one unit for producing at least one metal, comprising at least one device for producing or treating metal, and at least one unit for separating gas from air. comprising at least one outlet for at least one air gas.
  • the metal production units in particular of steel production, currently integrate several metal production or treatment devices to eventually group them into a complete production line from the processing of raw ore to the production of products. finished, ready for marketing.
  • Most of these metal production or treatment devices are large consumers of compressed air (more than 100 Nm3 of air per tonne of metal) and / or air gases, in particular oxygen, (more than 50 Nm3 per tonne of metal) and / or a neutral gas (more than 10 Nm3 per tonne of metal).
  • compressed air more than 100 Nm3 of air per tonne of metal
  • air gases in particular oxygen, (more than 50 Nm3 per tonne of metal) and / or a neutral gas (more than 10 Nm3 per tonne of metal).
  • These air gases are generally supplied from liquefied gas containers or through gas pipelines.
  • These air gases are moreover produced by air gas separation units, in particular of the cryogenic type, also supplied with pressurized air.
  • Air compressors whether for metal production or processing devices or for
  • the object of the present invention is to provide a combined installation of at least one metal production unit and at least one air gas separation unit optimizing the synergies between these units, in particular by pooling d '' a compressed air production unit and by direct coupling, on site, of metal production or treatment devices with the air gas sources offered by the air gas separation unit.
  • the combined installation comprises a compressed air production unit having at least one outlet connected to the gas separation unit from the air and to said device for producing or treatment for the air supply thereof.
  • the installation comprises at least one fluid line connecting the outlet of the separation unit to said device for the supply of at least one air gas, in gaseous or liquid form, to the latter.
  • the present invention also aims to provide a combined installation of the aforementioned type and also exploiting the thermal synergies between the two units, in particular the refrigeration capacities offered by a separation unit, in particular of the cryogenic type.
  • the metal processing production device comprises at least one cooling circuit, at least part of which is functionally associated with at least one fluid circuit of the cryogenic separation unit of air gas.
  • the invention also relates to the optimization of a cryogenic separation unit having excess compressed air.
  • a high and medium pressure compressed air production group I there are three main groups cooperating mutually, namely a high and medium pressure compressed air production group I, a steel production line II and a cryogenic separation unit of air gas III, here of the cryogenic type.
  • line II comprises a steel melting furnace 1, typically an EAF arc furnace or a furnace with nozzles and burners EOF, the molten metal of which is transferred to a device 2 for processing or nuancing the molten steel of converter type, AOD ("Argon oxygen decarburization) or BOF (" Basic oxygen furnace "), which is then transferred, via a continuous casting device 3 and a continuous reheating furnace 4 to a rolling train 5.
  • the furnace 1 is supplied with steel either directly from a device 6 for reducing or pre-reducing iron ore, of the blast furnace or direct reduction COREX or DRI type, either in scrap metal by a scrap sorting device 7.
  • the cryogenic unit for the separation of air gas III typically comprises at least one double distillation column 9, comprising, as shown in FIG. 2, a medium pressure column 10 and a low pressure column 11 and, advantageously, a column of argon mixture (not shown), and supplied with compressed air, under a pressure of at least 4x105 Pa, typically of 6 to 3 5 x 105 Pa, via a compressed air supply line 12 incorporating an adsorbent purification device 13.
  • the separation unit comprises at least one pure oxygen outlet 14, one outlet substantially pure nitrogen 15, a substantially pure argon outlet 16, a waste gas outlet 17 (generally impure nitrogen) and an additional cryogenic fluid outlet 18, for example liquid or gaseous nitrogen or liquid air.
  • groups II and III are supplied with compressed air by the same common compression group I comprising a train of compressors 19 having several outputs, at least some of which are associated with a group of drying and deoiling 20, supplying at least high pressure compressed air (typically greater than 6 x 105 Pa) to at least one line 21 and advantageously at least medium pressure compressed air (between 3 and 6 x 105 Pa), to a series of pipes 22.
  • a train of compressors 19 having several outputs, at least some of which are associated with a group of drying and deoiling 20, supplying at least high pressure compressed air (typically greater than 6 x 105 Pa) to at least one line 21 and advantageously at least medium pressure compressed air (between 3 and 6 x 105 Pa), to a series of pipes 22.
  • the pipe 21 is directly connected to the pipe 12 while the pipes 22 are connected, via an adjustment and, optionally, pressure relief device 23 to the furnace 1, for the supply burners or nozzles, to the molten steel treatment device 2, for the supply of nozzles or burners, to the reheating furnace 4, to the supply of burners, and to the rolling train 5, for the supply of air spray tion of cooling water, as well as, for the supply to all of these devices, of medium pressure dry air called "air instrument "for the protection or sheathing of monitoring control instruments of these devices, for example temperature probes or television cameras.
  • Medium pressure air is also sent to the sorting device 7 for supplying the sorting air ejection nozzles therefrom.
  • Medium pressure air and / or high pressure air is also sent to the steel reduction or pre-reduction device 6 for supplying nozzles or burners of the latter and / or for the supply of instrument air.
  • Dry compressed air at medium pressure can also be supplied, at an outlet 24 of the device 23, to a network of compressed air for other utility devices of the installation or neighbors thereof.
  • the oxygen supplied by group III is sent to the reduction or pre-reduction device 6, for the supply of burners or injectors, to the oven 1, for the supply burners or post-combustion nozzles, to the molten steel treatment device 2, for the supply of nozzles or burners of the latter, and to the reheating furnace 4 for the supply of burners of the latter.
  • nitrogen and / or argon are sent to device 1, for conveying carbonaceous particles, to device 2, for bubbling therein, and to devices 3 to 5, for their inerting or zoning.
  • a supply pipe of cooling water 26 is placed in a heat exchange condition, direct or indirect, in a exchanger 27, with a flow of cold or saturable residual gas available at outlet 17 and / or at outlet 18 of the double column 9 and conveyed by a pipe 170, the water thus cooled being sent to inlet A of the circuit of cooling water from oven 1, or to a part of the cooling circuit of this oven 1 involving the hottest areas, at an inlet B of cooling water from at least one stage of the compressor train 19, and / or at a cooling water inlet C of the reduction or pre-reduction device 6.
  • the synergy between groups II and III can be further improved by recovering the hot water or the steam from the cooling circuit A at l water from the oven 1, from the circuit C for cooling the device 6, and / or from the circuit B for cooling the compressor train in order to send it to the purification device 13 with a view to regenerating its adsorbent.
  • the hot water or steam leaving the cooling circuits A to C, and / or the hot compressed air leaving a stage of the compressor train 19 can also be used to vaporize a cryogenic liquid available at the outlet of the separation unit III or, in particular for argon not necessarily produced by unit III, supplied by a tank, the resulting gas being at least partly supplied to the devices of unit II.
  • the compressor train 19, at least in part, is of the type driven by pressurized steam, advantageously supplied by a steam network E, of which at least a part is in heat exchange relationship with at least one of the devices 1-6 of the metal production unit II.
  • the water vapor network E is more particularly connected to at least one of the metal melting furnace 1, the reheating furnace 4 and the device for reduction or pre-reduction of ores 6.
  • FIG. 2 shows a particular embodiment of group III exploiting the availability of large quantities of high pressure air at the outlet of a high capacity compressor group and used to produce oxygen and nitrogen at at least medium pressure and clean, dry air at at least medium pressure to supply at least to the various devices in group II.
  • the high pressure compressed air supply line 12 comprising, upstream of the purification device 13, a refrigeration unit 28, of the mechanical or absorption type, the cooled and purified air being over compressed by a booster 29 driven by an expansion turbine 30, called the Claude turbine, which relaxes part of the compressed air cooled in a first exchange line 31 for its introduction into the tank of the medium pressure column 10, part of the supercharged and cooled air being addressed by passing through a second cold exchange line 32 and an expansion valve at an intermediate level of the medium pressure column, and, after sub-cooling, at an upper level of the low pressure column 11.
  • liquid oxygen is extracted at 33 from the bottom of the medium pressure column 11
  • nitrogen gas is extracted at 36 from the top of the medium pressure column 10
  • liquid nitrogen e is extracted at the head of the medium pressure column 11.
  • expanded air typically at a pressure between 5 and 7 ⁇ 105 Pa, at the outlet of the turbine 30 is taken and addressed, by a line 34 crossing the exchange lines 32 and 31, to the distribution device 23 or directly to some of the devices in group II.
  • the expansion of this supplement of air not introduced into the double column 9 allows an additional production of cold which is used to obtain a greater production of the cryogenic liquids in the double column 9 and this, with a significantly better specific energy due to the supply of compressed air by the high capacity compressor group I.
  • the cryogenic unit III can supply, as shown by the network E in FIG. 1, at least part of these fluids to other user sites. , by pipes, after spraying, or in bulk form.
  • pressurized air can also be derived directly from the line connecting the booster 29 to the expansion turbine 30, upstream from the exchange line 31, for the supply, by a line 35, to the distribution device 23 or directly to at least some of the devices of group II.
  • the installation according to the invention in addition to reducing the energy, investment and operating costs, makes it possible to optimize the arrangement within the metal production unit, of each of said groups I, II and III, so as to reduce the surface area occupied on the ground and to reduce pollution, in particular the overall noise level, of the installation.
  • the installation according to the invention allows the location of group I, which is generally noisy, in a single chosen location on the site.
  • integration can be carried out in a similar manner, alternatively or additionally, with an air gas separation unit of the adsorption or permeation type, in this case producing substantially pure oxygen and / or l substantially pure nitrogen, in place and in place of a cryogenic unit such as 9 or in parallel with the latter, the two separation units being in the latter case supplied by the same unit I, as well as with production units for non-ferrous metals, including copper, nickel, zinc or lead.
  • an air gas separation unit of the adsorption or permeation type in this case producing substantially pure oxygen and / or l substantially pure nitrogen, in place and in place of a cryogenic unit such as 9 or in parallel with the latter, the two separation units being in the latter case supplied by the same unit I, as well as with production units for non-ferrous metals, including copper, nickel, zinc or lead.
  • metal production or treatment devices 1-6
  • other types of metal production or treatment devices such as pocket ovens, degassing units, surface treatment, dephosphating or desulfurization treatment. .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Emergency Medicine (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Gas Separation By Absorption (AREA)
EP94402427A 1993-11-12 1994-10-27 Kombination einer Metallproduktionsanlage mit einer Luftzerlegungsanlage Revoked EP0653599B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9313521A FR2712383B1 (fr) 1993-11-12 1993-11-12 Installation combinée d'une unité de production de métal et d'une unité de séparation de l'air.
FR9313521 1993-11-12

Publications (2)

Publication Number Publication Date
EP0653599A1 true EP0653599A1 (de) 1995-05-17
EP0653599B1 EP0653599B1 (de) 1997-11-19

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Country Status (11)

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US (2) US5538534A (de)
EP (1) EP0653599B1 (de)
JP (1) JPH07239193A (de)
KR (1) KR100332078B1 (de)
CN (1) CN1080866C (de)
AU (1) AU685164B2 (de)
CA (1) CA2135568C (de)
DE (1) DE69406895T2 (de)
ES (1) ES2109639T3 (de)
FR (1) FR2712383B1 (de)
ZA (1) ZA948834B (de)

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EP0767349A2 (de) * 1995-10-04 1997-04-09 Air Products And Chemicals, Inc. Verwendung von Stickstoff aus der Lufttrennung beim Entfernen von Kohlendioxid aus einem anderen Prozessgas
WO1997039298A1 (en) * 1996-04-15 1997-10-23 The Boc Group Plc Air separation apparatus
FR2753638A1 (fr) * 1996-09-25 1998-03-27 Air Liquide Procede pour l'alimentation d'une unite consommatrice d'un gaz
EP3771872A1 (de) * 2019-08-02 2021-02-03 Linde GmbH Verfahren und anlage zur bereitstellung eines erdgasprodukts

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FR2745821B1 (fr) * 1996-03-11 1998-04-30 Air Liquide Procede de conduite d'une installation comprenant une unite de traitement de metal et une unite de traitement de gaz
GB9609099D0 (en) * 1996-05-01 1996-07-03 Boc Group Plc Oxygen steelmaking
FR2763664B1 (fr) * 1997-03-04 1999-06-18 Air Liquide Procede d'alimentation d'une unite consommatrice d'un gaz a plusieurs pressions
FR2774308B1 (fr) * 1998-02-05 2000-03-03 Air Liquide Procede et installation combines de production d'air comprime et d'au moins un gaz de l'air
FR2782154B1 (fr) 1998-08-06 2000-09-08 Air Liquide Installation combinee d'un appareil de production de fluide de l'air et d'une unite dans laquelle se produit une reaction chimique et procede de mise en oeuvre
US6045602A (en) * 1998-10-28 2000-04-04 Praxair Technology, Inc. Method for integrating a blast furnace and a direct reduction reactor using cryogenic rectification
FR2790483A1 (fr) * 1999-03-03 2000-09-08 Air Liquide Procede de sechage de l'air et son application a un procede et a une installation metallurgique
US6279344B1 (en) 2000-06-01 2001-08-28 Praxair Technology, Inc. Cryogenic air separation system for producing oxygen
FR2814178B1 (fr) * 2000-09-18 2002-10-18 Air Liquide Alimentation en air enrichi en oxygene d'une unite de production de metal non-ferreux
FR2828729B1 (fr) * 2001-08-14 2003-10-31 Air Liquide Installation de production d'oxygene sous haute pression par distillation d'air
FR2862128B1 (fr) * 2003-11-10 2006-01-06 Air Liquide Procede et installation de fourniture d'oxygene a haute purete par distillation cryogenique d'air
FR2862004B3 (fr) * 2003-11-10 2005-12-23 Air Liquide Procede et installation d'enrichissement d'un flux gazeux en l'un de ses constituants
FR2872262B1 (fr) * 2004-06-29 2010-11-26 Air Liquide Procede et installation de fourniture de secours d'un gaz sous pression
FR2898134B1 (fr) * 2006-03-03 2008-04-11 Air Liquide Procede d'integration d'un haut-fourneau et d'une unite de separation de gaz de l'air
US8287215B2 (en) 2006-11-28 2012-10-16 Minute Key Inc. Fully automatic key duplicating machine with automatic key model identification system
US20130331976A1 (en) 2010-06-03 2013-12-12 Minute Key Inc. Key duplicating system
US9556649B1 (en) 2010-07-15 2017-01-31 The Hillman Group, Inc. Key identification system
DE102011112909A1 (de) 2011-09-08 2013-03-14 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Gewinnung von Stahl
US9506272B2 (en) 2013-08-16 2016-11-29 The Hillman Group, Inc. Two-piece key assembly
US10124420B2 (en) 2016-02-08 2018-11-13 The Hillman Group, Inc. Key duplication machine having user-based functionality
DE102016107468B9 (de) * 2016-04-22 2017-12-21 Fritz Winter Eisengiesserei Gmbh & Co. Kg Verfahren und Anlage zur Nutzung eines von einer Gaszerlegeeinrichtung bereitgestellten Zielgases
US10406607B2 (en) 2016-09-13 2019-09-10 The Hillman Group, Inc. Key duplication machine having pivoting clamp
US10737335B2 (en) 2017-03-17 2020-08-11 The Hillman Group, Inc. Key duplication system with key blank orientation detection features
CN113154796B (zh) * 2021-03-23 2022-12-09 金川集团股份有限公司 一种回收氧氮资源的可变多循环氧氮冷能利用装置及方法

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EP0532429A1 (de) * 1991-09-13 1993-03-17 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren zum Kühlen eines Gases in einer Vorrichtung zur Nutzung von Luft und eine Vorrichtung zur Durchführung des Verfahrens
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0767349A2 (de) * 1995-10-04 1997-04-09 Air Products And Chemicals, Inc. Verwendung von Stickstoff aus der Lufttrennung beim Entfernen von Kohlendioxid aus einem anderen Prozessgas
EP0767349A3 (de) * 1995-10-04 1998-01-14 Air Products And Chemicals, Inc. Verwendung von Stickstoff aus der Lufttrennung beim Entfernen von Kohlendioxid aus einem anderen Prozessgas
WO1997039298A1 (en) * 1996-04-15 1997-10-23 The Boc Group Plc Air separation apparatus
US6189337B1 (en) 1996-04-15 2001-02-20 The Boc Group Plc Air separation apparatus
FR2753638A1 (fr) * 1996-09-25 1998-03-27 Air Liquide Procede pour l'alimentation d'une unite consommatrice d'un gaz
EP0833120A1 (de) * 1996-09-25 1998-04-01 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren zur Gasversorgung einer Verbrauchereinheit
US6062043A (en) * 1996-09-25 2000-05-16 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for feeding a gas-consuming unit
EP3771872A1 (de) * 2019-08-02 2021-02-03 Linde GmbH Verfahren und anlage zur bereitstellung eines erdgasprodukts

Also Published As

Publication number Publication date
CN1105752A (zh) 1995-07-26
CA2135568A1 (fr) 1995-05-13
US5538534A (en) 1996-07-23
EP0653599B1 (de) 1997-11-19
AU7770894A (en) 1995-05-18
FR2712383A1 (fr) 1995-05-19
USRE37014E1 (en) 2001-01-16
DE69406895T2 (de) 1998-04-30
DE69406895D1 (de) 1998-01-02
ES2109639T3 (es) 1998-01-16
JPH07239193A (ja) 1995-09-12
KR100332078B1 (ko) 2002-11-27
ZA948834B (en) 1995-07-13
FR2712383B1 (fr) 1995-12-22
CA2135568C (fr) 2005-10-11
AU685164B2 (en) 1998-01-15
KR950013628A (ko) 1995-06-15
CN1080866C (zh) 2002-03-13

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